I am using a Dell laser printer and 100% sure that it is compatible with Windows 7 OS. When Windows Update downloads the drivers for my printer, error arise during installation and because of this the overall installation gets fail. Because of this, I tried several times to install the driver but I get struck at the same spot. One more thing I have installed the drivers from Dell official website. My devices - Dell 1720 laser printer, windows 7 64 bit.
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Try this process and feel free to share your dell 1720 printer driver problems or queries, if you have any.